@node tzname @section @code{tzname} @findex tzname POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/tzname.html} Gnulib module: --- Portability problems fixed by Gnulib: @itemize @end itemize Portability problems not fixed by Gnulib: @itemize @item This variable is missing on some platforms: IRIX 6.5, mingw. @item The address of this variable is not a compile-time constant on some platforms: Cygwin, mingw. @item Native Windows platforms (mingw, MSVC) support only a subset of time zones supported by GNU or specified by POSIX@. @xref{tzset}. @end itemize A more portable way of getting the time zone abbreviation is to use @code{strftime} with the @code{%Z} format. @xref{strftime}.